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Why does limit switch sometimes stay open the flame is out but the fan still runs till its cooled down?
Wiki User
∙ 15y ago
The switch is set to a temp, and will close when the temp is reached.
Wiki User
∙ 15y ago
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What is wrong when the Rudd heating unit ignites but does not stay on long enough for the temperature to come up to the thermostat setting?
either your thermostat is bad or the flame sensor on unit is no good. it also can be a limit switch. if it lights and stays on for awhile but doesnt reach temperature then its thermostat. if it lights for 10 seconds it is sensor or limit switch.
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